Error when running python setup.py develop

[AtomicNess123]

When running: python setup.py develop

Traceback (most recent call last):
  File "setup.py", line 63, in <module>
    'site-packages/'.format(py_ver))
  File "/Users/user/opt/anaconda3/lib/python3.7/posixpath.py", line 94, in join
    genericpath._check_arg_types('join', a, *p)
  File "/Users/user/opt/anaconda3/lib/python3.7/genericpath.py", line 155, in _check_arg_types
    raise TypeError("Can't mix strings and bytes in path components") from None
TypeError: Can't mix strings and bytes in path components